Gardening with Oklahoma Native Plants: Steve Owens, Bustani Plant Farm
Soil preparation is not as important for native plants: they like the soil the way it is! Some even like to be stressed. Try growing them in cracks between landscape elements.
Wildflower meadow gardens are great for pollinator habitat, but study your site first. Consider microclimate and choose plants accordingly. Contrasting white flowers can help break up the uniformity of a meadow garden.